BETTER RESULTS WITH UNIQUE PULSE FUNCTION: This deodorizer's O-777 circuit board has 11,000 mg/h to regulate fan speed and ozone output to create a 'pulse' effect. This helps eliminate any lingering 'must' or embedded odors and results in a longer lasting treatment. Destroys Odors You Can't Get To: Ozone reacts directly with pollutants in the air, water, fabrics and walls to destroy them rather than mask them. Unlike other types of air purifiers, it doesn't require air to pass through the machine to eliminate odors. COMMON USES: Odor cleansing of cars, boats, dumpsters, kitchens, bathrooms, basements, flood and fire affected areas, and any cooking, smoking, pet, 'musty' or general odors. Simple operation: turn the timer knob. leave space. After ozone generation is complete, wait another 30 minutes for any residual ozone to return to breathable air. WARNING: All ozone generators should only be operated in unoccupied spaces. Remove any people, pets or plants. The space may be reoccupied after being 'emptied' for 30 minutes. Not for sale in California.